CN105199432A - Coarse whiting production process - Google Patents
Coarse whiting production process Download PDFInfo
- Publication number
- CN105199432A CN105199432A CN201510636018.5A CN201510636018A CN105199432A CN 105199432 A CN105199432 A CN 105199432A CN 201510636018 A CN201510636018 A CN 201510636018A CN 105199432 A CN105199432 A CN 105199432A
- Authority
- CN
- China
- Prior art keywords
- coarse whiting
- pulverizing
- powder
- modification
- chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention discloses a coarse whiting production process. The coarse whiting production process has the advantages that an air jet pulverization and surface modification integrated machine is used for production, sodium citrate modification processes are improved, parameters are optimized, air jet pulverization and surface modification are performed simultaneously, and accordingly, discharging speed of coarse whiting powder can be increased; the pulverization discharge rate of coarse whiting is increased from 21.0g/min to 68.9-70.8g/min after optimal pulverization and modification parameters are selected; the coarse whiting modified according to a sodium citrate modification method has lower oil absorption and viscosity and higher quality than coarse whiting modified by sodium citrate according to an immersion method.
Description
Technical field
The present invention relates to a kind of GCC production technique, belong to chemical field.
Background technology
Water-ground limestone, is called for short coarse whiting, is with natural calcite, marble, rhombspar or chalk for raw material, reaches the powder-like product of certain fineness after mechanical means grinding and classification.Production method is mainly dry method and wet method.Coarse whiting is as the use of the mineral filler of cheapness, and it is widely used in the industries such as papermaking, plastics, rubber, coating.At present, the equipments such as coarse whiting processing enterprise many employings vertical mill, ball mill and Raymond mill, Raymond mill is suitable for the processing of the following powder of 400 order, the production of comparatively suitable 800 ~ 1250 order superfine powders of ball mill.Vertical mill is suitable for the mass-producing processing of the following non-metallic mineral powder of 1250 order; its mass-producing and energy saving effect remarkable; while realizing the production that becomes more meticulous of product to a great extent, there is the advantages such as simple to operate, easy to maintenance, processing set-up is simple, floor space is little, construction investment is low, noise is little, the feature of environmental protection is good.Vertical mill equipment and technology thereof have become one of new development of the Progress of Non-Metallic Minerals Powder Processing Technology in China researchs such as coarse whiting instantly.
Coarse whiting powder is a kind of important functional inorganic filling, be widely used, but due to the surface of inorganic powder filler and superpolymer or interfacial property different, consistency is poor, be difficult to dispersed, direct filling easily causes the shortcomings such as some mechanical properties decrease of material.Therefore to its modifying surface process, intergranular repulsion need be increased, reduce intergranular gravitation, be easy to dispersion, improve its surfactivity, increase consistency, produce new physical chemistry, mechanical property and new function to increase surface.The method of modifying of coarse whiting powder mainly contains surface physics modification, mechanochemical modification, plasma modification.Prior art has people to have studied the wet-process modified coarse whiting powder of Trisodium Citrate: (1) is using Trisodium Citrate as modifier modification coarse whiting powder, Optimal technique process is: the consumption of Trisodium Citrate is 6% (massfraction) of dicalcium powder body, activation temperature 65 DEG C, soak time 45min, distilled water add-on 40mL (slurry concentration is 12.5%).(2) settling volume of modified under its optimal conditions coarse whiting powder is 0.65mL/g, degree of activation 67.9%, and oil-absorption(number) is 230mg/g, and viscosity number is 120mPas, and pH value is 8.50.
The present invention aims to provide a kind of new GCC production technique, it carries out on comminution by gas stream and surface modification all-in-one, and Trisodium Citrate modified technique is improved, each parameter is also optimized, make to carry out surface modification treatment while comminution by gas stream, the discharging speed of heavy calcium carbonate powder can be improved, after selecting best pulverizing and modified parameter, the pulverizing discharge velocity of water-ground limestone brings up to 68.9g/min by 21.0g/min, and with the modified coarse whiting of Trisodium Citrate method of the present invention relative to the coarse whiting with the modification of immersion method Trisodium Citrate, its oil-absorption(number) is lower, viscosity is lower, quality is better.
Summary of the invention
Based on the technical problem that background technology exists, the present invention is directed to background technology Problems existing, a kind of new GCC production technique is provided, it carries out on comminution by gas stream and surface modification all-in-one, and Trisodium Citrate modified technique is improved, each parameter is also optimized, make to carry out surface modification treatment while comminution by gas stream, the discharging speed of heavy calcium carbonate powder can be improved, after selecting best pulverizing and modified parameter, the pulverizing discharge velocity of water-ground limestone brings up to 68.9-70.8g/min by 21.0g/min, and with the modified coarse whiting of Trisodium Citrate method of the present invention relative to the coarse whiting with the modification of immersion method Trisodium Citrate, its oil-absorption(number) is lower, viscosity is lower, quality is better.
Object of the present invention is achieved through the following technical solutions:
A production method for coarse whiting, its step is as follows:
(1) raw material is prepared: select 650-900 μm of water-ground limestone particle; Prepare modifier solution: sodium citrate concentration: 30-38g/L, sodium chloride concentration 3-5g/L, solvent is water;
(2) synchronous pulverizing and modification: use comminution by gas stream and surface modification all-in-one, first the coarse whiting particle of 1.5kg is added in comminution by gas stream chamber, then peristaltic pump is adopted to spray in modification chamber by modifier solution by atomizing nozzle, consumption is the 5.0-5.8% of dicalcium powder weight, open supersonic speed simultaneously and pulverize nozzle high-pressure air, coarse whiting particle in crushing chamber is pulverized, realizes coarse whiting particle air-flow powder; The object of surface modification treatment simultaneously; Weighing to pulverizing the ultrafine heavy calcium powder obtained after every 10min, in crushing chamber, then adding the dicalcium powder of equal in quality to keep the dicalcium powder mass conservation in crushing chamber, it is 50-55 DEG C that period keeps pulverizing gas flow temperature;
(3) finished product reclaims.
Usefulness of the present invention is:
The invention provides a kind of new GCC production technique, it carries out on comminution by gas stream and surface modification all-in-one, and Trisodium Citrate modified technique is improved, each parameter is also optimized, make to carry out surface modification treatment while comminution by gas stream, the discharging speed of heavy calcium carbonate powder can be improved, after selecting best pulverizing and modified parameter, the pulverizing discharge velocity of water-ground limestone brings up to 68.9-70.8g/mi by 21.0g/min, and with the modified coarse whiting of Trisodium Citrate method of the present invention relative to the coarse whiting with the modification of immersion method Trisodium Citrate, its oil-absorption(number) is lower, viscosity is lower, quality is better.
Embodiment
All embodiments are carried out on JFCM-5 type comminution by gas stream and surface modification all-in-one.
embodiment 1:
The production method of coarse whiting, its step is as follows:
(1) raw material is prepared: select 650 μm of water-ground limestone particles; Prepare modifier solution: sodium citrate concentration: 38g/L, sodium chloride concentration 3g/L, solvent is water;
(2) synchronous pulverizing and modification: use comminution by gas stream and surface modification all-in-one, first the coarse whiting particle of 1.5kg is added in comminution by gas stream chamber, then peristaltic pump is adopted to spray in modification chamber by modifier solution by atomizing nozzle, consumption is 5.8% of dicalcium powder weight, open supersonic speed simultaneously and pulverize nozzle high-pressure air, coarse whiting particle in crushing chamber is pulverized, realizes coarse whiting particle air-flow powder; The object of surface modification treatment simultaneously; Weighing to pulverizing the ultrafine heavy calcium powder obtained after every 10min, in crushing chamber, then adding the dicalcium powder of equal in quality to keep the dicalcium powder mass conservation in crushing chamber, it is 50 DEG C that period keeps pulverizing gas flow temperature;
(3) finished product reclaims.
Result:
The pulverizing discharge velocity of water-ground limestone brings up to 70.8g/mi by 21.0g/min;
The settling volume of modified coarse whiting powder is 0.51mL/g, and oil-absorption(number) is 120mg/g, and viscosity number is 80mPas, and pH value is 8.5.
embodiment 2:
The production method of coarse whiting, its step is as follows:
(1) raw material is prepared: select 900 μm of water-ground limestone particles; Prepare modifier solution: sodium citrate concentration: 30g/L, sodium chloride concentration 5g/L, solvent is water;
(2) synchronous pulverizing and modification: use comminution by gas stream and surface modification all-in-one, first the coarse whiting particle of 1.5kg is added in comminution by gas stream chamber, then peristaltic pump is adopted to spray in modification chamber by modifier solution by atomizing nozzle, consumption is 5.0% of dicalcium powder weight, open supersonic speed simultaneously and pulverize nozzle high-pressure air, coarse whiting particle in crushing chamber is pulverized, realizes coarse whiting particle air-flow powder; The object of surface modification treatment simultaneously; Weighing to pulverizing the ultrafine heavy calcium powder obtained after every 10min, in crushing chamber, then adding the dicalcium powder of equal in quality to keep the dicalcium powder mass conservation in crushing chamber, it is 50 DEG C that period keeps pulverizing gas flow temperature;
(3) finished product reclaims.
Result:
The pulverizing discharge velocity of water-ground limestone brings up to 68.9g/mi by 21.0g/min;
The settling volume of modified coarse whiting powder is 0.51mL/g, and oil-absorption(number) is 100mg/g, and viscosity number is 100mPas, and pH value is 7.8.
embodiment 3:
The production method of coarse whiting, its step is as follows:
(1) raw material is prepared: select 780 μm of water-ground limestone particles; Prepare modifier solution: sodium citrate concentration: 37g/L, sodium chloride concentration 4g/L, solvent is water;
(2) synchronous pulverizing and modification: use comminution by gas stream and surface modification all-in-one, first the coarse whiting particle of 1.5kg is added in comminution by gas stream chamber, then peristaltic pump is adopted to spray in modification chamber by modifier solution by atomizing nozzle, consumption is 5.7% of dicalcium powder weight, open supersonic speed simultaneously and pulverize nozzle high-pressure air, coarse whiting particle in crushing chamber is pulverized, realizes coarse whiting particle air-flow powder; The object of surface modification treatment simultaneously; Weighing to pulverizing the ultrafine heavy calcium powder obtained after every 10min, in crushing chamber, then adding the dicalcium powder of equal in quality to keep the dicalcium powder mass conservation in crushing chamber, it is 51 DEG C that period keeps pulverizing gas flow temperature;
(3) finished product reclaims.
Result:
The pulverizing discharge velocity of water-ground limestone brings up to 70.3g/mi by 21.0g/min;
The settling volume of modified coarse whiting powder is 0.53mL/g, and oil-absorption(number) is 150mg/g, and viscosity number is 90mPas, and pH value is 8.3.
embodiment 4:
The production method of coarse whiting, its step is as follows:
(1) raw material is prepared: select 830 μm of water-ground limestone particles; Prepare modifier solution: sodium citrate concentration: 31g/L, sodium chloride concentration 3g/L, solvent is water;
(2) synchronous pulverizing and modification: use comminution by gas stream and surface modification all-in-one, first the coarse whiting particle of 1.5kg is added in comminution by gas stream chamber, then peristaltic pump is adopted to spray in modification chamber by modifier solution by atomizing nozzle, consumption is 5.1% of dicalcium powder weight, open supersonic speed simultaneously and pulverize nozzle high-pressure air, coarse whiting particle in crushing chamber is pulverized, realizes coarse whiting particle air-flow powder; The object of surface modification treatment simultaneously; Weighing to pulverizing the ultrafine heavy calcium powder obtained after every 10min, in crushing chamber, then adding the dicalcium powder of equal in quality to keep the dicalcium powder mass conservation in crushing chamber, it is 54 DEG C that period keeps pulverizing gas flow temperature;
(3) finished product reclaims.
Result:
The pulverizing discharge velocity of water-ground limestone brings up to 69.3g/mi by 21.0g/min;
The settling volume of modified coarse whiting powder is 0.59mL/g, and oil-absorption(number) is 123mg/g, and viscosity number is 85mPas, and pH value is 7.9.
embodiment 5:
The production method of coarse whiting, its step is as follows:
(1) raw material is prepared: select 691 μm of water-ground limestone particles; Prepare modifier solution: sodium citrate concentration: 36g/L, sodium chloride concentration 5g/L, solvent is water;
(2) synchronous pulverizing and modification: use comminution by gas stream and surface modification all-in-one, first the coarse whiting particle of 1.5kg is added in comminution by gas stream chamber, then peristaltic pump is adopted to spray in modification chamber by modifier solution by atomizing nozzle, consumption is 5.6% of dicalcium powder weight, open supersonic speed simultaneously and pulverize nozzle high-pressure air, coarse whiting particle in crushing chamber is pulverized, realizes coarse whiting particle air-flow powder; The object of surface modification treatment simultaneously; Weighing to pulverizing the ultrafine heavy calcium powder obtained after every 10min, in crushing chamber, then adding the dicalcium powder of equal in quality to keep the dicalcium powder mass conservation in crushing chamber, it is 52 DEG C that period keeps pulverizing gas flow temperature;
(3) finished product reclaims.
Result:
The pulverizing discharge velocity of water-ground limestone brings up to 70.1g/mi by 21.0g/min;
The settling volume of modified coarse whiting powder is 0.54mL/g, and oil-absorption(number) is 163mg/g, and viscosity number is 95mPas, and pH value is 8.1.
embodiment 6 simultaneous test:
The production method of coarse whiting, its step is as follows:
(1) raw material is prepared: select 823 μm of water-ground limestone particles; Prepare modifier solution: sodium citrate concentration: 50g/L, solvent is water;
(2) synchronous pulverizing and modification: use comminution by gas stream and surface modification all-in-one, first the coarse whiting particle of 1.5kg is added in comminution by gas stream chamber, then peristaltic pump is adopted to spray in modification chamber by modifier solution by atomizing nozzle, consumption is 8% of dicalcium powder weight, open supersonic speed simultaneously and pulverize nozzle high-pressure air, coarse whiting particle in crushing chamber is pulverized, realizes coarse whiting particle air-flow powder; The object of surface modification treatment simultaneously; Weighing to pulverizing the ultrafine heavy calcium powder obtained after every 10min, in crushing chamber, then adding the dicalcium powder of equal in quality to keep the dicalcium powder mass conservation in crushing chamber, it is 53 DEG C that period keeps pulverizing gas flow temperature;
(3) finished product reclaims.
Result:
The pulverizing discharge velocity of water-ground limestone brings up to 41.8g/mi by 21.0g/min;
The settling volume of modified coarse whiting powder is 0.71mL/g, and oil-absorption(number) is 255mg/g, and viscosity number is 128mPas, and pH value is 8.5.
As can be seen here, the simple easily large-scale operation of present invention process, it carries out on comminution by gas stream and surface modification all-in-one, and Trisodium Citrate modified technique is improved, each parameter is also optimized, make to carry out surface modification treatment while comminution by gas stream, the discharging speed of heavy calcium carbonate powder can be improved, after selecting best pulverizing and modified parameter, the pulverizing discharge velocity of water-ground limestone brings up to 68.9-70.8g/mi by 21.0g/min, and with the modified coarse whiting of Trisodium Citrate method of the present invention relative to the coarse whiting with the modification of immersion method Trisodium Citrate, its oil-absorption(number) is lower, viscosity is lower, quality is better.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (2)
1. a production method for coarse whiting, its step is as follows:
(1) raw material is prepared: select 650-900 μm of water-ground limestone particle; Prepare modifier solution: sodium citrate concentration: 30-38g/L, sodium chloride concentration 3-5g/L, solvent is water;
(2) synchronous pulverizing and modification: use comminution by gas stream and surface modification all-in-one, first the coarse whiting particle of 1.5kg is added in comminution by gas stream chamber, then peristaltic pump is adopted to spray in modification chamber by modifier solution by atomizing nozzle, consumption is the 5.0-5.8% of dicalcium powder weight, open supersonic speed simultaneously and pulverize nozzle high-pressure air, coarse whiting particle in crushing chamber is pulverized, realizes coarse whiting particle air-flow powder; The object of surface modification treatment simultaneously; Weighing to pulverizing the ultrafine heavy calcium powder obtained after every 10min, in crushing chamber, then adding the dicalcium powder of equal in quality to keep the dicalcium powder mass conservation in crushing chamber, it is 50-55 DEG C that period keeps pulverizing gas flow temperature;
(3) finished product reclaims.
2. the production method of coarse whiting according to claim 1, is characterized in that:
(1) raw material is prepared: select 650 μm of water-ground limestone particles; Prepare modifier solution: sodium citrate concentration: 38g/L, sodium chloride concentration 3g/L, solvent is water;
(2) synchronous pulverizing and modification: use comminution by gas stream and surface modification all-in-one, first the coarse whiting particle of 1.5kg is added in comminution by gas stream chamber, then peristaltic pump is adopted to spray in modification chamber by modifier solution by atomizing nozzle, consumption is 5.8% of dicalcium powder weight, open supersonic speed simultaneously and pulverize nozzle high-pressure air, coarse whiting particle in crushing chamber is pulverized, realizes coarse whiting particle air-flow powder; The object of surface modification treatment simultaneously; Weighing to pulverizing the ultrafine heavy calcium powder obtained after every 10min, in crushing chamber, then adding the dicalcium powder of equal in quality to keep the dicalcium powder mass conservation in crushing chamber, it is 50 DEG C that period keeps pulverizing gas flow temperature;
(3) finished product reclaims.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510636018.5A CN105199432A (en) | 2015-09-30 | 2015-09-30 | Coarse whiting production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510636018.5A CN105199432A (en) | 2015-09-30 | 2015-09-30 | Coarse whiting production process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105199432A true CN105199432A (en) | 2015-12-30 |
Family
ID=54947403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510636018.5A Pending CN105199432A (en) | 2015-09-30 | 2015-09-30 | Coarse whiting production process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105199432A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105753032A (en) * | 2016-03-26 | 2016-07-13 | 南召鑫泰钙业有限公司 | Production process for heavy nano calcium carbonate |
| CN106241847A (en) * | 2016-08-16 | 2016-12-21 | 海宁永欣科技咨询有限公司 | A kind of manufacture method of ground calcium carbonate |
| CN110408237A (en) * | 2019-08-07 | 2019-11-05 | 江苏联瑞新材料股份有限公司 | A kind of woodcare paint clear finish silicon powder and preparation method thereof |
-
2015
- 2015-09-30 CN CN201510636018.5A patent/CN105199432A/en active Pending
Non-Patent Citations (3)
| Title |
|---|
| 刘雪东 等: ""粉体撞击流超细粉碎与表面改性研究"", 《化学工程》 * |
| 周国永 等: ""柠檬酸钠表面改性重钙粉体的研究"", 《应用化工》 * |
| 蔡楚江 等: ""重质碳酸钙颗粒气流粉碎与表面改性的一体化处理"", 《中国粉体技术》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105753032A (en) * | 2016-03-26 | 2016-07-13 | 南召鑫泰钙业有限公司 | Production process for heavy nano calcium carbonate |
| CN106241847A (en) * | 2016-08-16 | 2016-12-21 | 海宁永欣科技咨询有限公司 | A kind of manufacture method of ground calcium carbonate |
| CN107188211A (en) * | 2016-08-16 | 2017-09-22 | 海宁永欣科技咨询有限公司 | The preparation method of improved powdered whiting |
| CN110408237A (en) * | 2019-08-07 | 2019-11-05 | 江苏联瑞新材料股份有限公司 | A kind of woodcare paint clear finish silicon powder and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104403246A (en) | Ultrafine calcium carbonate powder acetal modifier | |
| CN108440995A (en) | A kind of method that wet method prepares modified micro-nano flame retardant of magnesium hydroxide | |
| CN103232732B (en) | Preparation method of superfine modified ground limestone | |
| CN104403266B (en) | Calcium carbonate powder modifying agent containing amino resins | |
| CN103396681B (en) | Composite fine barium sulfate and manufacturing method thereof | |
| CN105536963B (en) | A kind of production technology of calcium carbonate powder | |
| CN102351230A (en) | Preparation method of ultrafine active heavy calcium carbonate | |
| CN104371376A (en) | Glycidol ether superfine calcium carbonate powder assistant | |
| CN105399130B (en) | A kind of production technology of powdered whiting | |
| CN104556078A (en) | Method for producing calcined kaolin with high covering power | |
| CN105199432A (en) | Coarse whiting production process | |
| CN102500299B (en) | Preparation method for nanoscale modified magnesium hydroxide | |
| CN103539188B (en) | Preparation method of calcium carbonate fibers | |
| CN106543773A (en) | The scale surface treatment method of the superfine quartz powder of median≤2 μm | |
| CN108359274A (en) | Rosin derivative chelates calcium modified Nano or lightweight CaCO3Powder preparation method | |
| CN108275688A (en) | A kind of high oil absorption amount kleit preparation method | |
| CN105366702A (en) | Production method of pharmaceutical-grade calcium carbonate | |
| CN107377158A (en) | A kind of fine grading method of Moist chemical synthesis mica powder | |
| CN104910646A (en) | Preparation method for wet ground heavy calcium carbonate | |
| CN104194402A (en) | Preparation method of ultrafine calcium carbonate | |
| CN104403369A (en) | Preparation method for acrylic copolymer ground calcium carbonate ultrafine powder | |
| CN104497636A (en) | Preparation method of polyacrylamide modified heavy calcium carbonate powder | |
| CN104448940A (en) | Preparation method of polyethylene glycol modified ground calcium carbonate powder | |
| CN104987752A (en) | Acrylic acid copolymer heavy calcium carbonate ultra-fine powder production method | |
| CN103071572A (en) | Preparation method of superfine tricalcium phosphate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151230 |